Catheter system having imaging, balloon angioplasty, and stent deployment capabilities, and method of use for guided stent deployment
First Claim
1. A vascular catheter system for guided placement and implanting of a prosthesis within a body passageway, said system comprising:
- a catheter body having proximal and distal ends, and a proximal and a distal region, the proximal region having at least two lumens and the distal region having a common lumen connected to and in communication with both lumens of the proximal region;
a balloon disposed about the common lumen; and
an expandable prosthesis associated with the balloon, said prosthesis having a first diameter which permits intraluminal delivery of the prosthesis into a body passageway and which places the prosthesis in close proximity to the balloon, and a second expanded diameter upon the application of radial, outwardly extending force from the interior of the prosthesis.
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Accused Products
Abstract
A catheter system has a balloon angioplasty device disposed about a common lumen near its distal end. The balloon catheter is pre-fitted with a stent which is deployed when the balloon is inflated. The common lumen is in communication with multiple lumens within a proximal region of the catheter body to allow for positioning of the catheter over a movable guide wire and convenient delivery of imaging or interventional devices to a desired region of a body passageway being treated. The procedure for stent deployment optionally includes steps of imaging a lumen by ultrasound before and after stent deployment to identify the site at which a stent is needed, to confirm that the stent is being and has been deployed at a longitudinal position which does not overlap a branched segment of the body passageway, and to ensure that the stent has been radially opened to an optimum diameter.
153 Citations
31 Claims
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1. A vascular catheter system for guided placement and implanting of a prosthesis within a body passageway, said system comprising:
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a catheter body having proximal and distal ends, and a proximal and a distal region, the proximal region having at least two lumens and the distal region having a common lumen connected to and in communication with both lumens of the proximal region;
a balloon disposed about the common lumen; and
an expandable prosthesis associated with the balloon, said prosthesis having a first diameter which permits intraluminal delivery of the prosthesis into a body passageway and which places the prosthesis in close proximity to the balloon, and a second expanded diameter upon the application of radial, outwardly extending force from the interior of the prosthesis. - View Dependent Claims (2, 3)
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4. A vascular catheter system for guided placement and implanting of a prosthesis within a body passageway, said system comprising:
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a catheter body having proximal and distal ends, and a proximal and a distal region, the proximal region having at least two lumens and the distal region having a common lumen connected to and in communication with both lumens of the proximal region;
means for retaining the prosthesis in close proximity to the distal region of said catheter body; and
an expandable prosthesis associated with said retaining means, said prosthesis having a first diameter which permits intraluminal delivery of the prosthesis into a body passageway and which places the prosthesis in close radial proximity to said catheter body, and a second expanded diameter upon removal of said retaining means. - View Dependent Claims (5, 6, 7, 8)
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9. A method for guided placement and implanting of a prosthesis within a body passageway using a catheter having proximal and distal regions, wherein the prosthesis is associated with the distal region of the catheter, said prosthesis having proximal and distal ends, said method comprising the steps of:
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advancing the catheter into the body passageway until the prosthesis lies within a region of interest;
imaging by ultrasound from within the body passageway at least one of the proximal and distal ends of the prosthesis to ensure that the prosthesis is positioned at a desired location; and
expanding the prosthesis at the region of interest. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for implanting a prosthesis within a body passageway using a catheter having proximal and distal regions, and an angioplasty balloon disposed about the distal region, wherein the prosthesis is associated with said balloon, said method comprising the steps of:
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positioning the catheter within the body passageway so that the angioplasty balloon lies within a region of interest;
inflating the balloon to controllably expand the prosthesis at the region of interest;
imaging the prosthesis while disposed about the inflated balloon to determine a first diameter of the expanded prosthesis;
deflating the balloon, whereby the prosthesis is allowed to recoil; and
imaging the prosthesis to determine a second diameter to ensure that the recoiled prosthesis has a diameter sufficiently large. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A method for implanting a prosthesis within a body passageway using a catheter having proximal and distal regions, wherein a first prosthesis is associated with the distal region, said method comprising the steps of:
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positioning the catheter within the body passageway so that the first prosthesis lies within a region of interest;
expanding the first prosthesis at the region of interest; and
imaging the expanded prosthesis to determine a first diameter of the expanded prosthesis. - View Dependent Claims (31)
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Specification